<?php
class myip{

  public static function getIp(){
    return myrequest::getIP();
  }


  public static function getIpInfo($ip='') {
    if(!$ip) $ip = myrequest::getIP();
    return self::convert($ip);
  }

  public static function getAddresInfo($ip='') {
      return self::getIpInfo($ip);
  }

public static function convert($ip) {
      $ip1num = 0;
      $ip2num = 0;
      $ipAddr1 ="";
      $ipAddr2 ="";
      $dat_path = LIB_PATH.'/ip/qqwry.dat';
      if(!preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/", $ip)) {
        return 'IP Address Error';
      }
      if(!$fd = @fopen($dat_path, 'rb')){
        return 'IP date file not exists or access denied';
      }
      $ip = explode('.', $ip);
      $ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];
      $DataBegin = fread($fd, 4);
      $DataEnd = fread($fd, 4);
      $ipbegin = implode('', unpack('L', $DataBegin));
      if($ipbegin < 0) $ipbegin += pow(2, 32);
        $ipend = implode('', unpack('L', $DataEnd));
      if($ipend < 0) $ipend += pow(2, 32);
        $ipAllNum = ($ipend - $ipbegin) / 7 + 1;
      $BeginNum = 0;
      $EndNum = $ipAllNum;
      while($ip1num>$ipNum || $ip2num<$ipNum) {
        $Middle= intval(($EndNum + $BeginNum) / 2);
        fseek($fd, $ipbegin + 7 * $Middle);
        $ipData1 = fread($fd, 4);
        if(strlen($ipData1) < 4) {
          fclose($fd);
          return 'System Error';
        }
        $ip1num = implode('', unpack('L', $ipData1));
        if($ip1num < 0) $ip1num += pow(2, 32);

        if($ip1num > $ipNum) {
          $EndNum = $Middle;
          continue;
        }
        $DataSeek = fread($fd, 3);
        if(strlen($DataSeek) < 3) {
          fclose($fd);
          return 'System Error';
        }
        $DataSeek = implode('', unpack('L', $DataSeek.chr(0)));
        fseek($fd, $DataSeek);
        $ipData2 = fread($fd, 4);
        if(strlen($ipData2) < 4) {
          fclose($fd);
          return 'System Error';
        }
        $ip2num = implode('', unpack('L', $ipData2));
        if($ip2num < 0) $ip2num += pow(2, 32);
          if($ip2num < $ipNum) {
            if($Middle == $BeginNum) {
              fclose($fd);
              return 'Unknown';
            }
            $BeginNum = $Middle;
          }
        }
        $ipFlag = fread($fd, 1);
        if($ipFlag == chr(1)) {
          $ipSeek = fread($fd, 3);
          if(strlen($ipSeek) < 3) {
            fclose($fd);
            return 'System Error';
          }
          $ipSeek = implode('', unpack('L', $ipSeek.chr(0)));
          fseek($fd, $ipSeek);
          $ipFlag = fread($fd, 1);
        }
        if($ipFlag == chr(2)) {
          $AddrSeek = fread($fd, 3);
          if(strlen($AddrSeek) < 3) {
          fclose($fd);
          return 'System Error';
        }
        $ipFlag = fread($fd, 1);
        if($ipFlag == chr(2)) {
          $AddrSeek2 = fread($fd, 3);
          if(strlen($AddrSeek2) < 3) {
            fclose($fd);
            return 'System Error';
          }
          $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));
          fseek($fd, $AddrSeek2);
        } else {
          fseek($fd, -1, SEEK_CUR);
        }
        while(($char = fread($fd, 1)) != chr(0))
        $ipAddr2 .= $char;
        $AddrSeek = implode('', unpack('L', $AddrSeek.chr(0)));
        fseek($fd, $AddrSeek);
        while(($char = fread($fd, 1)) != chr(0))
        $ipAddr1 .= $char;
      } else {
        fseek($fd, -1, SEEK_CUR);
        while(($char = fread($fd, 1)) != chr(0))
        $ipAddr1 .= $char;
        $ipFlag = fread($fd, 1);
        if($ipFlag == chr(2)) {
          $AddrSeek2 = fread($fd, 3);
          if(strlen($AddrSeek2) < 3) {
            fclose($fd);
            return 'System Error';
          }
          $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));
          fseek($fd, $AddrSeek2);
        } else {
          fseek($fd, -1, SEEK_CUR);
        }
        while(($char = fread($fd, 1)) != chr(0)){
          $ipAddr2 .= $char;
        }
      }
      fclose($fd);
      if(preg_match('/http/i', $ipAddr2)) {
        $ipAddr2 = '';
      }
      $ipaddr = "$ipAddr1 $ipAddr2";
      $ipaddr = preg_replace('/CZ88.NET/is', '', $ipaddr);
      $ipaddr = preg_replace('/^s*/is', '', $ipaddr);
      $ipaddr = preg_replace('/s*$/is', '', $ipaddr);
      if(preg_match('/http/i', $ipaddr) || $ipaddr == '') {
        $ipaddr = 'Unknown';
      }
      $ipaddr = @iconv("gbk","utf-8".'//IGNORE',$ipaddr);
      return $ipaddr;
    }

}